Two teens accused of participating in a gang initiation that included torturing, sodomizing, assaulting and robbing several men they believed were gay were actually victims of the attack, Bronx prosecutors conceded yesterday.

The 17-year-olds had been charged with gang assault and assault as a hate crime in the horrific Oct. 3 gay-bash torture session, but the charges have been dropped, according to a 75-count indictment released yesterday.

Prosecutors initially thought there were four victims and up to a dozen perpetrators, but now they believe that a group of seven men, including alleged ringleaders David Rivera, 21, and Idelefonso Mendez, 23, participated in the all-night booze- and pot-fueled horror show.

In all, there were six victims who suffered various combinations of beatings, threats, burnings, robbery, assault, torture and sodomy, according to the documents.

“Are you a faggot?” the pair shouted before they sodomized two men, according to court papers.